GB2452640A - Receiver for object locating and tracking systems and related methods - Google Patents
Receiver for object locating and tracking systems and related methods Download PDFInfo
- Publication number
- GB2452640A GB2452640A GB0819500A GB0819500A GB2452640A GB 2452640 A GB2452640 A GB 2452640A GB 0819500 A GB0819500 A GB 0819500A GB 0819500 A GB0819500 A GB 0819500A GB 2452640 A GB2452640 A GB 2452640A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fsk
- receiver
- communication signal
- communications
- tag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
A communications system, such as part of a real-time location system, includes a transmitter that can be part of a location processor, tag emission reader or tag interrogator that generates a frequency shift key (FSK) modulated wireless communication signal representative of digital data and transmits the communications signal over a wireless communications channel. A receiver such as incorporated within a tag transceiver used in the real-time location system receives the FSK modulated communication signal. The receiver includes a circuit for calculating the magnitude of low and high tones of the FSK modulated communication signal and a threshold for amplitude shift keyed (ASK) channel data and FSK channel data to derive the digital data even in the presence of on-tone jammers in the communications channel.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74511006P | 2006-04-19 | 2006-04-19 | |
US11/696,202 US8265191B2 (en) | 2006-04-19 | 2007-04-04 | Receiver for object locating and tracking systems and related methods |
PCT/US2007/008330 WO2007123812A1 (en) | 2006-04-19 | 2007-04-05 | Receiver for object locating and tracking systems and related methods |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0819500D0 GB0819500D0 (en) | 2008-12-03 |
GB2452640A true GB2452640A (en) | 2009-03-11 |
GB2452640B GB2452640B (en) | 2010-12-08 |
Family
ID=38441404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0819500A Active GB2452640B (en) | 2006-04-19 | 2007-04-05 | Receiver for object locating and tracking systems and related methods |
Country Status (3)
Country | Link |
---|---|
US (1) | US8265191B2 (en) |
GB (1) | GB2452640B (en) |
WO (1) | WO2007123812A1 (en) |
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US10834531B2 (en) | 2005-12-15 | 2020-11-10 | Polte Corporation | Multi-path mitigation in rangefinding and tracking objects using reduced attenuation RF technology |
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2007
- 2007-04-04 US US11/696,202 patent/US8265191B2/en active Active
- 2007-04-05 GB GB0819500A patent/GB2452640B/en active Active
- 2007-04-05 WO PCT/US2007/008330 patent/WO2007123812A1/en active Application Filing
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US6349116B1 (en) * | 1999-10-14 | 2002-02-19 | Wherenet Corp. | Data communication system harnessing frequency shift keyed magnetic field |
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Also Published As
Publication number | Publication date |
---|---|
GB2452640B (en) | 2010-12-08 |
GB0819500D0 (en) | 2008-12-03 |
WO2007123812A1 (en) | 2007-11-01 |
US8265191B2 (en) | 2012-09-11 |
US20070248180A1 (en) | 2007-10-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20190404 AND 20190410 |